Automotive signalling unit designed to keep trailer indicators flashing consistently, introduced as Hella Flasher Unit. Predictable flash timing gives reassurance when towing or replacing a faulty relay. Will it match a vehicle harness and deliver the expected flash behaviour?
⚡ At a Glance
- • Flashing Performance: Around 90 ± 15 flashes per minute, with a bright time close to 37.5 ± 5.5% at room temperature and test voltage
- • Best for: Trailer owners and technicians needing a direct-fit electronic flasher for 6-pin systems
- • Not ideal for: Vehicles without a compatible 6-pin connector or installations needing different flash characteristics
Electronic 6-pin flasher unit for 12/24V systems, supplied with a mounting holder for trailer use. Designed to produce roughly 90 flashes per minute with about 37.5% bright time under test conditions.
Consistent indicator timing - with electronic flasher control
Electronic regulation controls the timing cycle, delivering a flashing frequency specified as 90 ± 15 per minute and a bright time of 37.5 ± 5.5% at room temperature and test voltage.
Predictable signalling helps other road users recognise intentions and makes diagnosing wiring faults easier for repairers.
Dual-voltage compatibility - thanks to 12/24V rating
Rated for both 12V and 24V electrical systems, allowing fitment across common towing setups without needing a separate relay for each voltage.
Useful when switching between light vehicles and larger towing units, avoiding the need to source different flasher units for each system.
Fast replacement and secure mount - with 6-pin connector and holder
Standard 6-pin connector supports plug-in replacement while the included holder provides a mounting point for secure retention and straightforward installation.
Speeds up roadside swaps and workshop replacements by simplifying electrical connection and mechanical fixing.
✨ The 4 Key Reasons for Hella Flasher Unit
- 12/24V compatibility - Ensures correct operation across trailer and truck electrics
- 6-pin connector - Allows direct replacement for many standard trailer harnesses
- Electronic flasher operation - Maintains steady flash rate regardless of bulb condition
- Included mounting holder - Simplifies installation and keeps unit secure on bracket
📋 Technical Details at a Glance
- Category: Automotive Parts and Accessories
- Product Type: Flasher unit
- Brand: Hella
- Model: 4DZ 004 019-021
- Voltage: 12/24V
❓ Frequently Asked Questions
Q: Is the flasher unit compatible with both 12V and 24V systems?
A: Yes, the unit is rated for 12/24V systems and is intended for use where either voltage is present.
Q: What connector type is required?
A: A 6-pin connector is used, and a mounting holder is supplied to aid secure installation.
Q: What flash rate should be expected?
A: The flashing frequency is specified as 90 ± 15 per minute, with a bright time of 37.5 ± 5.5% at room temperature and test voltage.
🏆 Our Verdict
Suitable for trailer owners and technicians who need a straightforward, direct-fit electronic flasher for 6-pin systems. The combination of 12/24V compatibility, measured flash characteristics and a supplied mounting holder makes it a practical replacement for many towing applications. Long-term value comes from predictable signalling and simpler repairs, reducing repeat visits to the workshop.
